865741 has 2 divisors, whose sum is σ = 865742. Its totient is φ = 865740.

The previous prime is 865729. The next prime is 865747. The reversal of 865741 is 147568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 864900 + 841 = 930^2 + 29^2 .

It is a cyclic number.

It is not a de Polignac number, because 865741 - 2¹¹ = 863693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (865747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432870 + 432871.

It is an arithmetic number, because the mean of its divisors is an integer number (432871).

2⁸⁶⁵⁷⁴¹ is an apocalyptic number.

It is an amenable number.

865741 is a deficient number, since it is larger than the sum of its proper divisors (1).

865741 is an equidigital number, since it uses as much as digits as its factorization.

865741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

The square root of 865741 is about 930.4520406770. The cubic root of 865741 is about 95.3079939283.

The spelling of 865741 in words is "eight hundred sixty-five thousand, seven hundred forty-one".